Antron HO 55 w REPLACEMENT Ballast, 120-277 volt, Size: Length - 9.5" (includes mounting tabs), Width - 1.3", Height - 1", Power Factor - 0.98, MAX THD - 0.86 to 1.20, Minimum Starting Temperature - Minus 20 Degree F. Operates following lamps: F54T5 - 1 or 2, FC12T5HO - 1 or 2, FT36/39W - 1 or 2, FT50W - 1 or 2, FT55W - 1 or 2. Item # BT55UV.
